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. 2023 Mar 8;12(6):1235. doi: 10.3390/plants12061235

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Amount of polyphenols in shoot (A,C) and root (B,D) under control (C) and high electrical voltage discharge (HVED) treatment (H) on 2nd and 5th day, respectively. In 4A, the left scale shows the amount of CA, p-CA and CFA, and the right scale shows FA. In 4B, the left scale shows CA, p-CA and FA, and the right scale presents CFA. Cinnamic acid (CA); p-coumaric acid (p-CA); ferulic acid (FA); caffeic acid (CFA); p-hydroxybenzoic acid (p-HBA); 3,4-dihydroxybenzoic acid (3,4-dHBA); 2,6-dyhydroxybenzoic acid (2,6-dHBA); salicylic acid (SA) and benzoic acid (BA). Values are means of 3–5 repetitions ± S.D. The different letters denote significances among means between days and treatments at p < 0.05 using the LSD post hoc test.